@font-face{font-family:Mukta;src:url(/fonts/Mukta-400.woff2) format("woff2");font-weight:400;font-display:swap}@font-face{font-family:Mukta;src:url(/fonts/Mukta-600.woff2) format("woff2");font-weight:600;font-display:swap}@font-face{font-family:Mukta;src:url(/fonts/Mukta-700.woff2) format("woff2");font-weight:700;font-display:swap}@font-face{font-family:Mukta;src:url(/fonts/Mukta-800.woff2) format("woff2");font-weight:800;font-display:swap}@font-face{font-family:Nunito;src:url(/fonts/Nunito-700.woff2) format("woff2");font-weight:700;font-display:swap}@font-face{font-family:Nunito;src:url(/fonts/Nunito-800.woff2) format("woff2");font-weight:800;font-display:swap}@font-face{font-family:Nunito;src:url(/fonts/Nunito-900.woff2) format("woff2");font-weight:900;font-display:swap}:root{color-scheme:light;--paper: #f7f7f5;--surface: #ffffff;--ink: #161616;--muted-ink: #5b5b58;--brand-50: #f0f0ed;--brand-100: #e3e3df;--brand-200: #cbcbc6;--brand-300: #adada7;--brand-400: #7e7e77;--brand-500: #6b6b65;--brand-600: #545450;--brand-700: #40403c;--brand-800: #2b2b28;--brand-900: #1a1a18;--stage: #232320;--stage-deep: #0d0d0c;--stage-ink: #f0f0ed;--stage-muted: #c2c2bc;--clay-100: #eeeeeb;--clay-500: #2b2b28;--clay-600: #3a3a35;--clay-700: #161615;--gold-100: #fff4c7;--gold-500: #ffd23f;--gold-600: #7d6820;--gold-700: #8c7423;--grow-100: #d6f3e6;--grow-500: #04806a;--grow-600: #036654;--sun-100: #fdefc9;--sun-500: #8f6410;--sun-600: #73500b;--berry-100: #fbe3ee;--berry-600: #84154b;--alert-100: #ffe0e0;--alert-500: #a81523;--alert-600: #7d0e1a;--shadow-card: 0 1px 2px rgb(21 26 35 / .04), 0 4px 16px rgb(21 26 35 / .06);--shadow-lift: 0 2px 4px rgb(21 26 35 / .06), 0 12px 32px rgb(21 26 35 / .1);--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-3xl: 2rem;--tap: 44px;--font-sans: "Mukta", Verdana, "Noto Sans Devanagari", "Nirmala UI", ui-sans-serif, system-ui, sans-serif;--font-display: "Nunito", "Mukta", Verdana, "Nirmala UI", sans-serif}:root[data-theme=dark]{color-scheme:dark;--paper: #111111;--surface: #1b1b1b;--ink: #f1f1ee;--muted-ink: #a9a9a4;--brand-50: #1e1e1c;--brand-100: #2e2e2b;--brand-200: #3d3d39;--brand-300: #55554f;--brand-400: #7c7c75;--brand-500: #96968f;--brand-600: #b4b4ad;--brand-700: #cfcfc9;--brand-800: #e3e3de;--brand-900: #f2f2ef;--stage: #1c1c1a;--stage-deep: #0a0a09;--stage-ink: #e9edf4;--stage-muted: #c8c8c2;--clay-100: #242422;--clay-500: #74746e;--clay-600: #dcdcd6;--clay-700: #6a6a64;--gold-100: #332b10;--gold-500: #ffd23f;--gold-600: #e8bc46;--gold-700: #8c7423;--grow-100: #0c2a20;--grow-500: #037a78;--grow-600: #3fdcc0;--sun-100: #2c2210;--sun-500: #8a6316;--sun-600: #e0b24f;--berry-100: #2d1220;--berry-600: #f0a2c2;--alert-100: #301313;--alert-500: #c23c39;--alert-600: #e8756f;--shadow-card: 0 1px 2px rgb(0 0 0 / .4), 0 4px 16px rgb(0 0 0 / .45);--shadow-lift: 0 2px 4px rgb(0 0 0 / .5), 0 12px 32px rgb(0 0 0 / .55)}:root{--bg: var(--paper);--panel: var(--surface);--text: var(--ink);--muted: var(--muted-ink);--border: var(--brand-100);--accent: var(--clay-500);--accent-soft: var(--brand-50);--ok: var(--grow-600);--ok-soft: var(--grow-100);--bad: var(--alert-600);--bad-soft: var(--alert-100);--warn: var(--sun-600);--warn-soft: var(--sun-100);--easy: var(--grow-600);--medium: var(--sun-600);--hard: var(--alert-600);--radius: var(--radius-3xl)}*{box-sizing:border-box}html,body{margin:0;background:var(--paper);color:var(--ink);font:400 16px/24px var(--font-sans);-webkit-font-smoothing:antialiased}a{color:var(--ink);text-underline-offset:3px}h1,h2,h3{font-family:var(--font-display);font-weight:800;color:var(--ink)}h1{font-size:36px;line-height:40px;letter-spacing:-.022em;margin:0 0 1rem}h2{font-size:24px;line-height:32px;margin:2.25rem 0 .75rem}h3{font-size:18px;line-height:26px}:focus-visible{outline:3px solid 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1.5rem;font-family:var(--font-display);font-weight:800;text-decoration:none;box-shadow:0 5px 0 var(--gold-500);transition:transform .1s ease-out,box-shadow .1s ease-out}button.primary:hover,.primary-link:hover,.btn-primary:hover{background:var(--clay-700)}button.primary:active,.primary-link:active,.btn-primary:active{box-shadow:0 1px 0 var(--gold-500);transform:translateY(4px)}button.primary:disabled{box-shadow:0 5px 0 var(--brand-200)}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;text-decoration:none;background:var(--surface);color:var(--ink);border:2px solid var(--brand-400);border-radius:var(--radius-2xl);min-height:var(--tap);padding:.6rem 1.4rem;font-family:var(--font-display);font-weight:800;box-shadow:0 5px 0 var(--brand-200);transition:transform .1s ease-out,box-shadow .1s ease-out}.btn-secondary:hover{background:var(--brand-50)}.btn-secondary:active{box-shadow:0 1px 0 var(--brand-200);transform:translateY(4px)}button.large{padding:.85rem 2rem;font-size:1.05rem}button.danger{color:var(--alert-600);border-color:var(--alert-500);box-shadow:0 4px 0 var(--alert-100);background:var(--surface)}button.link{border:none;background:none;color:var(--ink);padding:.25rem .4rem;min-height:0;text-decoration:underline;font-family:var(--font-sans);font-weight:600;box-shadow:none}@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}input[type=text],input[type=number],input[type=password],.search,textarea{font:inherit;min-height:var(--tap);padding:.5rem .85rem;border:2px solid var(--brand-100);border-radius:var(--radius-xl);background:var(--surface);color:var(--ink)}input[type=text]:focus,input[type=number]:focus,.search:focus,textarea:focus{border-color:var(--brand-400);outline:none}.search{width:100%;max-width:520px}kbd{background:var(--surface);border:1px solid 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.brand{font-family:var(--font-display);font-weight:900;font-size:1.35rem;letter-spacing:-.02em;color:var(--ink);margin-right:.75rem;padding-left:0;padding-right:0;background:none!important}.topnav .brand{display:inline-flex;align-items:center;gap:.5rem}.topnav .brand-mark{flex:none;display:block}.topnav .brand .brand-ez{box-shadow:inset 0 -.32em 0 var(--gold-500);color:var(--ink)}:root[data-theme=dark] .topnav .brand .brand-ez{box-shadow:inset 0 -.32em 0 var(--gold-700)}.topnav .theme-toggle{margin-left:auto;width:var(--tap);height:var(--tap);padding:0;display:inline-grid;place-items:center;border-radius:var(--radius-xl);border:1px solid var(--brand-100);background:var(--brand-50);color:var(--ink);box-shadow:none}.topnav .theme-toggle:hover{background:var(--brand-100)}.page{max-width:1120px;margin:0 auto;padding:2rem 1.5rem 4rem}.page.with-sidebar{display:grid;grid-template-columns:290px 1fr;gap:1.75rem;max-width:1320px}@media (max-width: 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.btn-primary{background:var(--gold-500);color:#161616;box-shadow:0 5px 0 var(--gold-700)}.hero .btn-primary:hover{background:#ffdc66}.hero .btn-primary:active{box-shadow:0 1px 0 var(--gold-700)}.hero .btn-secondary{background:transparent;color:var(--stage-ink);border-color:var(--stage-muted);box-shadow:0 5px #000}.hero .btn-secondary:hover{background:#ffffff0f}@media (max-width: 640px){.hero h1{font-size:36px}.hero-inner{padding:2.5rem 1.25rem}}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.25rem;margin-top:1.5rem}.card{display:block;text-decoration:none;color:inherit;background:var(--surface);border:1px solid var(--brand-100);border-radius:var(--radius-3xl);padding:1.5rem;box-shadow:var(--shadow-card);transition:box-shadow .15s ease-out,border-color .15s ease-out,transform .15s ease-out}a.card:hover{box-shadow:var(--shadow-lift);border-color:var(--brand-400);transform:translateY(-2px)}.card h3{margin:0 0 .4rem;font-size:20px;line-height:28px}.card p{margin:0;color:var(--muted-ink)}.card-kicker{display:inline-block;font-size:12px;line-height:16px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted-ink);margin-bottom:.6rem}.stats-row{display:flex;gap:1rem;flex-wrap:wrap;margin:1.25rem 0}.stat{background:var(--surface);border:1px solid var(--brand-100);border-radius:var(--radius-2xl);padding:1rem 1.35rem;min-width:150px;box-shadow:var(--shadow-card)}.stat-value{font-family:var(--font-display);font-size:30px;line-height:36px;font-weight:900;letter-spacing:-.02em}.stat-label{color:var(--muted-ink);font-size:14px;line-height:20px}.filters{background:var(--surface);border:1px solid var(--brand-100);border-radius:var(--radius-3xl);box-shadow:var(--shadow-card);padding:1.25rem;align-self:start;position:sticky;top:76px;max-height:calc(100vh - 92px);overflow:auto}.filter-group{margin-bottom:1.35rem}.filter-title{display:block;font-family:var(--font-display);font-weight:800;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted-ink);margin-bottom:.5rem}.check{display:flex;gap:.65rem;align-items:center;min-height:40px;cursor:pointer}.check input[type=checkbox]{width:22px;height:22px;flex-shrink:0;accent-color:var(--brand-700);cursor:pointer}.check.small{font-size:15px;color:var(--muted-ink);min-height:36px}.check.small input[type=checkbox]{width:20px;height:20px}.skills{padding-left:1.6rem;margin-bottom:.35rem}.filter-head{display:flex;align-items:baseline;justify-content:space-between}.filter-head .filter-title{margin-bottom:.5rem}.filter-head .link{padding:0;font-size:14px}.hint{margin:-.25rem 0 .4rem}.domain-name{font-weight:700}.check .grow{flex:1}.check .count{font-size:13px;color:var(--muted-ink);font-variant-numeric:tabular-nums;font-weight:400;background:var(--brand-50);border-radius:999px;padding:0 .5rem}.seg{display:flex;gap:.4rem;flex-wrap:wrap}.seg button{flex:1;padding:.4rem .6rem;border-width:2px;border-color:var(--brand-100);border-radius:var(--radius-xl);font-weight:700;color:var(--muted-ink);box-shadow:none}.seg button:hover{border-color:var(--brand-400);color:var(--ink)}.seg button.active{background:linear-gradient(180deg,var(--clay-500),var(--clay-700));border-color:transparent;color:#fff}.seg button.active.diff-E{background:var(--grow-100);color:var(--grow-600);border-color:var(--grow-500)}.seg button.active.diff-M{background:var(--sun-100);color:var(--sun-600);border-color:var(--sun-500)}.seg button.active.diff-H{background:var(--alert-100);color:var(--alert-600);border-color:var(--alert-500)}.seg.big{max-width:680px;margin:1rem 0 1.25rem;gap:.75rem}.seg.big button{padding:1rem 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var(--brand-100);font-weight:700}.badge.subtle{background:transparent;color:var(--muted-ink)}.badge.diff-E{background:var(--grow-100);color:var(--grow-600);border-color:transparent}.badge.diff-M{background:var(--sun-100);color:var(--sun-600);border-color:transparent}.badge.diff-H{background:var(--alert-100);color:var(--alert-600);border-color:transparent}:root{--bb-blue: #324dc7;--bb-blue-soft: #dfe6ff;--bb-ink: #1e1e1e;--bb-rule: #c8c8c8;--bb-head: #f0f0f0;--bb-serif: "Noto Serif", Georgia, "Times New Roman", serif;--bb-sans: "Noto Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif}:root[data-theme=dark]{--bb-blue: #7d93ff;--bb-blue-soft: #26305a;--bb-ink: #e8eaf1;--bb-rule: #3a4052;--bb-head: #232735}.bb-screen{display:flex;flex-direction:column;min-height:calc(100vh - 57px);font-family:var(--bb-sans);color:var(--bb-ink)}.bb-top{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:.6rem 1.5rem;background:var(--panel)}.bb-section-title{font-weight:700;font-size:1.05rem}.bb-directions{font-size:.85rem;margin-top:.1rem}.bb-top-center{justify-self:center}.bb-top-right{justify-self:end;display:flex;gap:1.25rem}.bb-tool{display:flex;flex-direction:column;align-items:center;gap:.05rem;font:inherit;font-size:.8rem;background:none;border:none;padding:0;color:var(--bb-ink);text-decoration:none;cursor:pointer}.bb-tool-icon{font-size:1.15rem;line-height:1.2}.bb-timer{display:flex;align-items:center;gap:.6rem}.bb-clock{font-variant-numeric:tabular-nums;font-size:1.35rem;font-weight:400;min-width:4.2rem;text-align:center;display:inline-flex;justify-content:center}.bb-timer.low .bb-clock{color:#c0392b;font-weight:700}.bb-pill{font:inherit;font-size:.8rem;font-weight:600;padding:.2rem .8rem;border-radius:999px;border:1px solid var(--bb-ink);background:var(--panel);color:var(--bb-ink);cursor:pointer}.bb-practice-rule{position:relative;border-top:2px dashed var(--bb-ink);margin:0;height:0}.bb-practice-rule span{position:absolute;left:50%;top:-.65rem;transform:translate(-50%);background:var(--bg);padding:0 .6rem;font-size:.7rem;letter-spacing:.08em;font-weight:600}.bb-main{flex:1;padding:1.5rem 1.5rem 2rem}.bb-question{font-family:var(--bb-serif);font-size:1.05rem;line-height:1.6;max-width:1400px;margin:0 auto}.bb-question.split{display:grid;grid-template-columns:1fr 10px 1fr;align-items:start}.bb-question.single{max-width:760px}.bb-divider{width:2px;height:100%;min-height:60vh;background:var(--bb-rule);justify-self:center}.bb-pane{min-width:0}.bb-pane-body{padding:.75rem 1.75rem 1rem 1.5rem}.bb-passage .bb-pane-body{padding-top:1.25rem}.bb-prompt .bb-pane-body{padding-left:1.75rem}@media (max-width: 900px){.bb-question.split{grid-template-columns:1fr}.bb-divider{width:100%;height:2px;min-height:0;margin:1rem 0}.bb-pane-body{padding-left:.25rem;padding-right:.25rem}}.bb-qhead{display:flex;align-items:center;gap:.9rem;background:var(--bb-head);border-bottom:2px solid var(--bb-ink);padding:0 .75rem 0 0;font-family:var(--bb-sans)}.bb-qnum{background:var(--bb-ink);color:var(--panel);font-weight:700;font-size:1rem;padding:.35rem .8rem;min-width:2.4rem;text-align:center}.bb-mark{display:inline-flex;align-items:center;gap:.4rem;font:inherit;font-size:.9rem;background:none;border:none;padding:0;color:var(--bb-ink);cursor:pointer}.bb-mark.on{color:#c0392b;font-weight:600}.bb-mark.on svg{color:#c0392b}.bb-abc{margin-left:auto;font:inherit;font-size:.75rem;font-weight:700;letter-spacing:.02em;background:var(--panel);color:var(--bb-ink);border:1.5px solid var(--bb-ink);border-radius:4px;padding:.1rem .35rem;cursor:pointer}.bb-abc span{text-decoration:line-through}.bb-abc.on{background:var(--bb-ink);color:var(--panel)}.bb-figure{margin:0 0 1rem;overflow-x:auto}.bb-stem{margin:0 0 1.1rem}.bb-choices{display:flex;flex-direction:column;gap:.7rem;margin-bottom:1.25rem}.bb-choice{display:flex;align-items:center;gap:.6rem;position:relative}.bb-choice-main{flex:1;display:flex;align-items:center;gap:.9rem;text-align:left;font:inherit;color:var(--bb-ink);background:var(--panel);border:1.5px solid var(--bb-ink);border-radius:8px;padding:.5rem .8rem;cursor:pointer;min-height:3rem}.bb-choice-main:hover:not(:disabled){background:var(--bb-blue-soft)}.bb-choice-main:disabled{cursor:default;opacity:1}.bb-letter{flex:none;width:1.6rem;height:1.6rem;border-radius:50%;border:1.5px solid var(--bb-ink);display:grid;place-items:center;font-family:var(--bb-sans);font-weight:700;font-size:.85rem}.bb-choice.selected .bb-choice-main{border:2.5px solid var(--bb-blue);padding:calc(.5rem - 1px) calc(.8rem - 1px)}.bb-choice.selected .bb-letter{background:var(--bb-blue);border-color:var(--bb-blue);color:#fff}.bb-choice.correct .bb-choice-main{border:2.5px solid 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